WaPo revealed a presentation that describes PRISM, a system to datamine information from large websites. This article is a repost of the photos, and an archive of other documents supplied by Anonymous.
prism-slide-1.jpg, image/jpeg, 700x513
Here are the WaPo pictures.
I was unable to post the Anon leak. See this link.
http://pastebin.com/MPpT7xaf
Original: PRISM - told you so